The coil springs or the helical springs are mechanical devices which are typically used to store energy and then release it to absorb shock or maintain the force between the contacting surfaces. These performance parts are usually made from an elastic material formed into the shape of a helix which will then return to their natural length when unloaded. The coil springs are also a special type of torsion spring; the material of the spring acts in torsion when the spring is compressed or extended. The Intrax brand is one performance manufacturer that produces progressive springs.

This design will help your ride achieve a lowered look while maintaining the safety standards of the spring pre-load at the suspension drop. Every Intrax Coil Spring adheres to a second requirement when it comes to the production of springs - that is, ride quality. The Intrax progressive springs provide high performance looks and comfortable ride quality, and they come in either sport or race springs. The Intrax brand creates the finest springs from start to finish.

Intrax begins the forming process of the springs with cold winding to the most exact standards. Within two hours of forming, the springs are stress relieved in an oven and then shot peened to remove any surface imperfection and then to further relieve the stress. Next, the spring is then blocked. This eliminates the settling that other brands require due to the lower cost of their production processes. Finally, the springs are then coated in phosphate for that corrosion resistance property and then electrostatically powder-coated to ensure a lifetime of outstanding performance. The Intrax sport springs feature a lowering capability of 1.6 inches at the front and 1.6 inches at the rear, and shall give your ride a lowered performance look. The Intrax line of coil springs is one of the stiffest and lowest that is available for the street. These set of sport springs is recommended to be used with sport shocks and may require minor modifications or may require camber kits.